Home / 9,090.21-13,635.45-5,990.07

Finding the Fourth Proportional to 9,090.21, 13,635.45 and 5,990.07

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Solution

The fourth proportional to 9,090.21, 13,635.45 and 5,990.07 is: 8,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.21 : 13,635.45 = 5,990.07 : x
  2. Step 2: Convert to fraction form
    9,090.21/13,635.45 = 5,990.07/x
  3. Step 3: Cross multiply
    9,090.21x = 13,635.45 × 5,990.07
  4. Step 4: Simplify right side
    9,090.21x = 81,677,299.98
  5. Step 5: Solve for x
    x = 81,677,299.98/9,090.21
  6. Step 6: Final answer
    x = 8,985.19

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.